(NBC) – On the eleventh day of the search for Kyron Harmon, a missing 7-year-old Portland boy, investigators intensified their search in the area of Sauvie Island.
Searchers in wet-suits were seen moving through waist-high water while someone on shore provided directions.
A dive team searched swamps and ponds around the rural northwest Portland area and crews also searched around the Multnomah Channel.
Investigators would not say what led them to this area, but it was the fourth consecutive day crews scoured Sauvie Island.
On Monday the lead officer in the investigation into Kyron Horman's disappearance vowed to stay on the case until it's solved, despite scaling back search operations.
"This will not become a cold case for us," Capt. Jason Gates promised during the Monday morning press conference.
On Sunday, authorities announced that the search and rescue operation had officially transformed into a criminal investigation after 10 days of searching with no sign of Kyron.